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Holley Equipped Billet Fill Cap

Aluminum Bolt Bung

PART# 241-230

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$60.49   Suggested Retail
$49.00   Holleydays Price
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Looking for an alternative to your stock fuel cell cap or maybe you need a fill cap for that custom oil tank or valve cover you are building? Well, look no further! Holley has created a full line of Billet Fuel Cell Caps and Billet Fill Caps. Holley caps are CNC machined from 6061-T6 billet aluminum and they feature a bright black anodize for great looks and corrosion protection. Each cap features a laser etched Holley Equipped logo so you know it is quality product. Holley Billet Fill Cap kits allow you to put a fill cap or inspection plug anywhere it is needed. Kit #166020ERL is a bolt on with an O-ring seal and features a 2.17" 4-bolt style flange with stainless hardware. The kits has an easy to grip screw on cap with O-ring seal and a 1.38" diameter opening.


  • Kit allows for installation of fill cap or inspection plug anywhere needed
  • 2.17'' 4 bolt style flange
  • Bolt on fill cap with an o-ring seal
  • Easy to grip screw on cap
  • Stainless steel hardware included
  • Thread 1-1/2"-12


Emission Code5
Product TypeAccessory
Part Number241-230



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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        Some parts are not legal for use in California or other states with similar regulations.

         X  Holleydays 2020 20% off and DD
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